Air cleaner for dual carburetor



Oct. 22, 1957 J. J. DREZNES 2,310,452

AIR CLEANER FOR DUAL CARBURETOR Filed Sept. 27', 1955 4 Sheets-Sheet 1 INVENTOR. JOHN J. DREZNES ATTORNEYS Oct. 22, 1957 J. J. DREZNES 2,810,452

AIR CLEANER FOR DUAL CARBURETOR Filed Sept. 27, 1955 -.4 Sheets-Sheet 2 N kn l I 'ILI 'I' m N f N l0 (\1 O g N N N (\1 v m a m INVENTOR. JOHN J. DREZNES ATTORNEYS 1957 J. J. DREZNES 2,810,452

AIR CLEANER FOR DUAL CARBURETOR Filed Sept. 27, 1955 4 Sheets-Sheet 3 Iii- INVENTOR.

JOHN J. DREZNES ATTORNEYS Oct. 22, 1957 J. J. DREZNES 2,810,452

AIR CLEANER FOR DUAL CARBURETOR Filed Sept. 27, 1955 4 Sheets-Sheet 4 INVENTOR.

DREZNES AT TO R N EYS atent 2,810,452 Patented Oct. 22, 1957 AIR CLEANER FOR DUAL CARBURET OR John J. Dreznes, Chicago, Ill., assignor to United Specialties Company, Chicago, Ill., a corporation of Deltaware Application September 27, 1955, Serial No. 536,884

9 Claims. (Cl. 183-15) This is a continuation-in-part of my prior application Serial No. 380,573, filed September 16, 1953, now abandoned.

This invention relates to an air cleaner and particularly to a cleaner of the type suitable for use in connection with internal combustion engines to remove dust and other comparable impurities from the air as it moves to the engine or to the carburetor.

Another object is to provide a cleaner of the type indicated suitable for use in connection with a carbureting internal combustion engine which is supplied with a plurality of carburetors.

A further object is to provide a cleaner having adjustments by means of which it may be readily connected to a plurality of carburetors and adjusted accurately to fit them irrespective of the inaccuracies in their relative positioning.

Another object is to provide a connection member between a plurality of carburetors and a single air cleaner, the connection member having within itself movable and adjustable carburetor engaging parts to permit tight engagement with a plurality of carburetors irrespective of their spacing.

Another object of my invention is a silencer and air cleaner assembly having one or more air cleaners, a silencer chamber of the resonator type, and a manifold or duct for connection to a plurality of carburetors with means to take care of any inaccurate spacing between the carburetors.

Another object of my invention is a cleaner and silencer assembly of the above type adapted for connection to a plurality of side draft carburetors.

Another object of my invention is a hung-type cleaner and silencer assembly constructed for a side mounting on a plurality of inaccurately spaced carburetors.

Another object of my invention is a cleaner and silencer assembly which can be mounted on a plurality of either side draft or down draft carburetors, which are inaccurately spaced. 4

Other objects will appear from time to time throughout the specification and claims.

The invention is illustrated more or less diagrammatically in the accompanying drawings, wherein:

Figure 1 is a plan view of a form of the device;

Figure 2 is a vertical section taken at line 22 of Figure 1;

Figure 3 is a side elevation of the connection portion or connector member;

Figure 4 is a sectional detail taken vertically at line 4-4 of Figure 1;

Figure 5 is a horizontal section detail taken at line 5-5 of Figure 4;

Figure 6 is a section through the eccentric adjustment sleeve;

Figure 7 is an end elevation similar to Figure 3 showing the member 29 without attaching parts;

Figure 8 is a view, partly in section, similar to Figure 2, showing a modified form; and

Figure 9 is a fragmentary top View of Figure 8.

Like parts are indicated by like characters in the specification and drawings,

In the particular form here shown, the invention is embodied in an air cleaner of the more or less known socalled hat-type. This is a cleaner of the oil bath type arranged to be positioned on a carburetor, the cleaned air passing downward from the cleaner into the carburetor upon which the cleaner is positioned.

In the present invention this type of carburetor may be used conveniently, and it comprises generally a hattype cleaner having a closed bottom and an upward outlet or discharge for cleaned air, rather than a downward discharge for cleaned air.

The upward discharge is carried laterally through a pipe or conduit having connections for adjustment to two carburetors and adjustments arranged to permit tight attachment to each of the tWo carburetors irrespective of the accuracy of their positioning.

It is recognized that carburetors, so far as their relative positioning is concerned, are mounted and arranged with considerable tolerances and hence their positions will not always be the same when the air cleaner is to be installed. Therefore, the air cleaner should be arranged for tight attachment irrespective of relative variations of the carburetor positions.

This device therefore comprises a connection arranged to join the air cleaner to the two carburetors, providing within itself adjustment means to compensate for relative inaccuracy of the positioning of the carburetors.

Preferably, also, the cleaner includes silencing or resonating space arranged to reduce noises which might otherwise escape beyond the carburetor. Only so much of the air cleaner is shown as is necessary to indicate the presence of the essential parts and the relative location of the cleaner and connection members.

As shown, in Figure 2, the cleaner includes a housing member having a generally cylindrical section 1, a shoulder 2, a sump portion 3 and an inward tubular portion 4. This latter normally forms a part of the outlet for cleaned air. Positioned within the housing is a filter comprising a casing 5 which, with the housing member 1, forms an annular inlet 6 through which air to be cleaned enters.

The housing 5 is generally open at its bottom and is provided with a plurality of narrow cross members 7 which are joined to an annular central portion 8. Generally, the members 7 are as small as possible to permit the greatest opening possible through the bottom of the filter housing. The filter housing is completed by a tubular member 9 which is generally continuous with the section 4. Across the bottom of the filter housing is positioned a screen 10 and a similar screen 11 is positioned across the top. The filter mass 12 largely fills the space within the filter housing which is, as a whole, of annular shape. A cover 13 is positioned to close the upper part of the filter and the cleaner, as a Whole, and terminates in an upwardly directed tubular section 14.

The bottom of the member 4 is closed by a cap or plug 15 which is held in place on a stud 16 by means of a nut 17. The plug 15 thus closes what would normally be the outlet for cleaned air in the conventional or typical hat-type air cleaner. At its upper end the member 16 is welded or otherwise secured at 18 to a transverse member 19 which is positioned to span the portion 14.

A cover member 20 overlies the air cleaner and overlies the member 13 and 14. It forms a part of a silencer or resonator chamber and as shown, a portion of the bottom of this chamber is formed by the member 21 which extends outwardly beyond the cleaner inlet. This member 21 may be integral with the portion 13 or separate from it. The top or closure member 20 is secured to the member 21 by being crimped as at 22 or otherwise.

the cover portion 13 to which the top 22 is secured, these parts are held in position with respect to the cleaner proper by the stud 16. When the nut 17 is removed from the threaded end of the stud 16, the upper part of the assembly may be removed from the lower part and thus in effect, the resonator and the outlet passages and the cover of the cleaner are separable when the nut 17 is removed.

A gasket or other sealing member 23 may be positioned above the outwardly turned edge 24 of the filter housing 5. If desired, the member 13 may be shaped to provide an annular depression 25 within which the gasket 23 is received.

Removably positioned within the space above the cleaner proper and below the top of the envelope 20 is an outlet passage 26 for cleaned air. The air moves from the member 14 through the member 26. This member 26 preferably terminates at its outer end within the space in part bounded by the member 26 and thus it terminates within the silencer or resonator space. The member 20 is provided with an upward enlargement 27 above the top of the member 26 and therefore out of contact with that member. By this means the outlet conduit or passage member 26 is preferably free except at its point of contact with the member 14 to which it is normally secured by welding or otherwise.

The member 26 is positioned to discharge into a connection 28 which, as shown particularly in Figure 2, is of greater diameter than the member 26. The member 28 thus communicates freely with the interior of the resonator space defined by the parts 13, 20 and 21.

The member 28 also communicates with the conduit 29 which is provided with two branches 30 and 31. As shown in Figures 1 and 2, the conduit 29 may be formed of two parts separately shaped and fastened together. The particular details of the formation of the member 29 form no essential part of the invention. It may be formed in any manner so long as it furnishes adequate communication from the cleaner to the carburetor.

It is shown with the attaching parts in Figure 7. The member 29 includes one downwardly directed arm or outlet portion 30, slotted at 31, and another downwardly directed outlet portion 32 which may be of reduced diameter, as at 33, and slotted as at 34.

The portion 32 is intended to fit directly over the born or inlet member 35 of a carburetor 36. The slots permit engagement with a carburetor horn of somewhat inaccurate size or shape, and the clamp ring 37 is tightened in place and holds the connection between the carburetor and the member 33 tight.

Preferably to insure tightness a gasket 38 is positioned within the portion 33 and is placed against a gasket retainer 39 which is fixed by welding or otherwise within the member 33. The horn 35 of the carburetor will normally press against the gasket 38 which will thus be compressed between this carburetor horn and the gasket retainer 39.

At the opposite side of the air connection 29 an eccentric connection member 40 is inserted. This member, as shown in place in Figure 4 and in detail in Figures and 6 comprises a generally cylindrical section 40 and an ofiset or eccentric cylindrical section 41, slotted as at 42. When the parts are assembled as shown in Figure 4, the cylindrical portion 40 is in position within the slotted portion 31 of the member 30. It bears against a sealing gasket 43 which bears against the gasket retainer 44, welded or otherwise fixed in the member 30. A clamp ring 45 is positioned about a slotted portion 31 and holds the parts in place, holding the member 40 in place after adjustment within the slotted portion 31 of the member 30.

The eccentric member 40, 41 is normally engaged, when the parts are fully assembled, with and fitted over the horn 46 of a carburetor 47. The carburetorfits withi the slotted portion 42 of the member 41 and engages and presses against a sealing gasket 48 within the member 41. The gasket is engaged and positioned by a gasket retainer 49, fixed within the portion 41. When the carburetor is in place within the slotted portion 42 the clamp ring 50 is tightened and the carburetor is thus held in place.

The device of this invention is readily applicable to an assembly in which two carburetors are present. Ordinarily it is recognized that in current practice considerable tolerance may exist and the carburetors are not always positioned the same distance apart nor indeed are they always positioned identically with respect to the engine to which they are connected.

The device of this invention is applicable therefore, for connection to carburetors which may both be connected to the same intake manifold or may be each connected to a separate manifold, and it is arranged to require a minimum overall height to permit installation under an extreme low hood with a minimum of clearance.

In Figures 8 and 9 I have shown a variant form in which the air cleaner proper, designated generally at 51, may be much the same as before. I have omitted the cletails of the filter element proper and its screens as they may be the same as in Figure 2 and form no part of the present invention. The silencer chamber, designated generally at 52, is pulled down on the cleaner by the wing nut and stud assembly 53 and includes a top cap or cover 54 channeled to hold a gasket 55 to seal the edge of the housing. An intermediate wall 56 divides the silencer chamber into two subchambers or zones 57 and 58, one above the other, the lower chamber 57 communicating with the clean air outlet by a plurality of holes 59 disposed annularly about the outlet duct.

A tuning horn or elbow 60 is permanently mounted or otherwise suitably secured on the upper end of the outlet duct and extends toward a clean air manifold 61 which projects slightly into the silencer chamber at 62 and overlaps the tuning duct or horn so that they define between them an eccentric annular opening for sound communication between the upper chamber 58 and the air passage.

The manifold has generally two portions, first, an S-shaped section 63 and, second, a straight section 64 which gives the manifold a dog-leg appearance. Two outlet openings 65 and 66 are provided in the side surface of the manifold, either side for that matter, and each has a clamping mechanism on a flange for connection with the horns of dual carburetors. The opening 65 is positioned at the outer end of the straight section 64, while the inner opening 66 is at the bottom of the S-section and approximately at the junction between the two sections. 67 designates merely an interference indentation.

The clamping mechanisms 68 on the inner opening may take the same form as the clamping mechanism 37 in Figure 3, and I will therefore not refer to it in detail. The clamping mechanism 69 on the .outer opening includes two clamps 70 and 71 for connecting an eccentric member 72 to a carburetor horn. The eccentric member, clamps and gaskets may be the same as in Figure 4.

The use and operation of my device are as follows.

When the device is to be installed, the parts will gen erally be in position shown in Figure 2 and the several locking rings 37, 45 and 50 will be loosened sufficiently to permit a carburetor horn or pipe or connection to enter the split or lower portions ofthe members 30 and 32. The eccentric member 40, 41 will be rotated within its connection 30 to bring it in proper alignment so that it may be slipped over a carburetor connection at the same time that the member 32 is slipped over the connection of the other carburetor.

By turning the eccentric fitting 40, 41, the spacing between the legs or portions 30 and 32 may be varied in pro portion to the amount of eccentricity existing between the portion 40 and the portion 41.

For some purposes a variation of three-sixteenths (45 of an inch in this respect is sufiicient.

By this variation and by proper setting of the eccentric connection member, the device of this invention may be conveniently connected to two carburetors even though their spacing from each other varies as much as threesixteenths A of an inch from the normal or supposed spacing of the particular installation.

The invention may take the form of a cleaner and silencer assembly to be mounted on dual downdraft or side draft carburetors. While I have stated that it is usable on dual carburetors, either downdraft or side draft, it will be apparent that if more than two carburetors on an automobile become conventional, a plurality of outlet openings with appropriate connections could be used. In such a case each outlet opening in the manifold would have an eccentric clamping mechanism, such as at 69 in Figure 9. In short, one opening would act as a bench mark or reference point, While all of the other openings would have eccentrics to accommodate inaccurate spacing between the carburetors. The bench-mark opening or reference point would not necessarily have to be at one end, and it could be the center of three openings, for example. Nor do the openings necessarily need to be aligned, as they could be in a triangular or square pattern. If a plurality of openings in excess of two were aligned, the eccentric opening might need additional eccentrics so that the lateral spacing between the carburetors could be accommodated as well as any misalignment.

While I have shown and described a preferred form of one modification of my invention, it should be understood that numerous changes, substitutions and alterations can be made. For example, while I have shown only one air cleaner of the liquid bath type, a plurality of air cleaners could be connected to a suitable manifold member and some, if not all, of the claims should be interpreted accordingly. Additionally the invention is not restricted necessarily to a liquid bath air cleaner as a dry cleaner can also be used with tremendous advantage. In both forms shown in the drawings, the silencer chamber has been positioned above the cleaner housing, however the chamber could be below the cleaner with the air from the filter passing through the center tube 9 to a suitable outlet member attached to the bottom of the cleaner. With these and other changes in mind, I wish that my invention be unrestricted except as by the appended claims.

I claim:

1. In combination, an air cleaner including a filter casing; means defining an inlet passage and outlet passage for cleaned air; means defining a resonating chamber; an air outlet passage member communicating with the first men tioned cleaner outlet passage and positioned freely within said resonating chamber; a connection to said cleaner comprising means for attachment to a plurality of carburetors; said connection including a channel member having two outlet openings, each of said openings being provided with clamping means; an eccentric member positioned mov ably within one of said outlet openings and adapted to ad justment therein; and means for securing said eccentric member in adjusted position.

2. In combination, an air cleaner including a filter casing; means defining an inlet passage and outlet passage for cleaned air; means defining a resonating chamber positioned above and closing the top of said cleaner; an air outlet passage member communicating with the first mentioned cleaner outlet passage and positioned freely within said resonating chamber; a connection for said cleaner comprising means for attachment to a plurality of carburetors; said connection including a channel member having two outlet openings, each of said openings being provided with clamping means, an eccentric member positioned movably within one of said outlet openings and adapted for adjustment therein, and means for clamping said eccentric member in adjusted position.

3. In combination an air cleaner including a filter casing; means defining an inlet passage and outlet passage for cleaned air; means defining a resonating chamber; an air outlet passage member communicating with the first mentioned cleaner outlet passage and positioned freely within said resonating chamber and extending toward the side thereof; a connection to said cleaner comprising means for attachment to a plurality of carburetors; said connection including a channel member having two outlet openings, each of said openings being provided with clamping means; an eccentric member positioned movably within one of said outlet openings and adapted for adjustment therein; and means for clamping said eccentric member in adjusted position.

4. In combination an air cleaner including a filter casing; means defining an inlet passage and outlet passage for cleaned air; means defining a resonating chamber positioned above and closing the top of said cleaner; an air outlet passage member communicating with the first mentioned cleaner outlet passage and positioned freely within said resonating chamber and extending toward the side thereof; a connection to said cleaner comprising means for attachment to a plurality of carburetors; said connection including a channel defining member having two outlet openings, each of said openings being provided with clamping means; an eccentric member positioned movably within one of said outlet openings and adapted for rotary adjustment therein; and means for clamping said eccentric member in adjusted position.

5. In a combination air cleaner and silencer manifold assembly, one or more air cleaner housings, each having an air passage with an inlet for dirty air and an outlet for clean air, a filter medium in each cleaner housing for the air passage, a silencer chamber around the clean air outlets of all of the cleaner housings, an air duct for the silencer chamber, a plurality of outlets for the air duct generally parallel to each other but perpendicular to the air duct and having generally parallel center lines, means on all of the outlets for simultaneously connecting the same to a plurality of carburetors and, at the same time, rigidly mounting the entire assembly thereon, including an eccentric sleeve for each outlet except one, each eccentric sleeve being rotatably arranged with its outlet and adapted for gyratory adjustment, a clamping device for securing each eccentric sleeve in adjusted position, a clamping device for securing each eccentric sleeve on a carburetor, and a clamping device for securing the said one outlet on a carburetor.

6. The structure of claim 5 in which each air cleaner is a liquid bath type.

7. The structure of claim 5 in which the air duct has only two outlets.

8. The structure of claim 5 in which the unitary silencer chamber is on the top of each cleaner housing.

9. The structure of claim 5 characterized by and including an air outlet passage member in the form of a tuning elbow connected to the clean air outlet and positioned within the unitary silencer chamber.

References Cited in the file of this patent UNITED STATES PATENTS 1,725,987 Kersten Aug. 27, 1929 1,730,455 Glauber Oct. 8, 1929 2,243,083 Brown May 27, 1941 2,391,933 Wharam et al. Jan. 1, 1946 2,415,860 Ball et a1. Feb. 18, 1947 

